带有StreamingResponseBody async.request-timeout的@RestController不起作用 [英] @RestController with StreamingResponseBody async.request-timeout not working

问题描述

我正在尝试通过长时间运行的工作从@RestController获取StreamingResponseBody.无论我尝试哪种配置，它都会在30秒后超时.

I'm trying to get a StreamingResponseBody from a @RestController on a long running job. It times out after 30 seconds, no matter what configuration I try.

这是在Spring Boot 2.0.3中.我使用了下面的测试，该测试显示了相同的行为，试图正确配置.

This is in Spring Boot 2.0.3. I've used the below test which shows the same behavior to try and get the configuration correct.

@RestController
public class TestController {

    @RequestMapping("/streamtest")
    public StreamingResponseBody handleRequest () {
        return new StreamingResponseBody() {
            @Override
            public void writeTo (OutputStream out) throws IOException {
                for (int i = 0; i < 100000; i++) {
                    out.write((Integer.toString(i) + " - ").getBytes());
                    out.flush();
                    try {
                        Thread.sleep(500);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
       };
   }
}

我尝试了这里定义的async.request-timeout设置；异步超时，使用StreamingResponseBody下载大文件在Spring Boot上

I've tried the async.request-timeout setting defined here; Async timeout downloading a large file using StreamingResponseBody on Spring Boot

我尝试覆盖WebMvcConfig来设置超时.永远不会调用此方法.

I've tried overriding WebMvcConfig to set the timeout. This method is never called.

@EnableWebMvc
@Configuration
public class WebMvcConfig implements WebMvcConfigurer {

    @Override
    public void configureAsyncSupport(AsyncSupportConfigurer configurer) {
        configurer.setDefaultTimeout(3600000);
        WebMvcConfigurer.super.configureAsyncSupport(configurer);
    }
}

我尝试定义ThreadPoolTask​​Executor:

I've tried defining the ThreadPoolTaskExecutor:

@Configuration
@EnableAsync
@EnableScheduling
public class AsyncConfig implements AsyncConfigurer {

    @Override
    public Executor getAsyncExecutor() {
        return new ThreadPoolTaskExecutor();
    }
}

它总是在30秒后超时并显示日志；

It always times out after 30 seconds with a log;

12:14:28.028 [http-nio-8080-exec-2] DEBUG c.b.b.bof_static.config.BofStaticExceptionHandler - Async timeout for GET [/streamtest]
12:14:28.028 [http-nio-8080-exec-2] DEBUG org.springframework.web.servlet.DispatcherServlet - Null ModelAndView returned to DispatcherServlet with name 'dispatcherServlet': assuming HandlerAdapter completed request handling
12:14:28.028 [http-nio-8080-exec-2] DEBUG org.springframework.web.servlet.DispatcherServlet - Successfully completed request
12:14:28.030 [http-nio-8080-exec-2] DEBUG o.s.security.web.access.ExceptionTranslationFilter - Chain processed normally

我找不到其他解决方案.谁能指出缺少的东西吗?

I'm unable to find any other solutions. Can anyone point out what's missing?

推荐答案

在application.properties中设置以下选项可以解决此问题:

Setting the following option in application.properties can solve this:

spring.mvc.async.request-timeout = -1

但是，如果在代码中的任何地方实现 WebMvcConfigurer ，则上述选项将被忽略，因此您必须将其设置为以下内容:

However, if you implement WebMvcConfigurer anywhere in your code, then the above option will be ignored, so you have to set it up as the following:

@Configuration
@EnableWebMvc
public class WebConfig implements WebMvcConfigurer {
    // other config...
    @Override
    public void configureAsyncSupport(AsyncSupportConfigurer configurer) {
        configurer.setDefaultTimeout(-1);
    }
}

您也可以将其设置为正整数(毫秒).-1值将完全消除超时.

You can also set it to a positive integer (milliseconds). The value of -1 will completely remove the timeout.

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